Table 1.

Start, end dates and length of the Olea main pollen season (MPS) over the study period.

		2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	Average
MPS	Start	10-May	23-May	18-Apr	10-May	15-May	9-May	7-May	7-May	4-May	23-May	12-May
	End	18-Jun	25-Jun	29-May	27-Jun	13-Jul	19-Jun	10-Jun	10-Jul	3-Jun	1-Jul	21-Jun
	Length	40	34	42	49	60	42	35	65	31	40	44
Pollen	Total	239	112	426	395	146	179	447	207	1388	232	377
	Peak day	65	55	85	112	38	42	112	33	199	35	78
	Date peak	29-May	24-May	11-May	1-Jun	5-Jun	18-May	12-May	3-Jun	4-May	24-Jun	25-May
Ole e 1	Total	0.223	0.047	0.101	0.337	0.127	0.174	0.141	0.711	0.487	0.125	0.247
	Peak day	0.054	0.005	0.010	0.134	0.012	0.018	0.021	0.042	0.088	0.016	0.040
	Date peak	29-May	28-May	11-May	14-May	23-Jun	6-Jun	12-May	5-Jun	21-May	24-Jun	29-May
Pollen Allergen Potency × 10−4		9.318	4.168	2.362	8.539	8.714	9.708	3.159	34.151	3.507	5.371	8.705
Pollen risk	Moderate	1	1	3	4	0	0	0	0	7	0	1.6
	High	0	0	0	0	0	0	0	0	0	0	0
Ole e 1 risk	Moderate	2	0	0	1	0	1	1	19	6	1	3.1
	High	1	0	0	3	0	0	0	0	2	0	0.6
Pollen + Allergen	Moderate	3	1	3	5	0	1	1	19	9	1	4.3
	High	1	0	0	3	0	0	0	0	2	0	0.6

Total Olea pollen (pollen/m³), pollen peak (pollen/m³), pollen peak date (days). Total allergen (ng/m³), allergen peak (ng/m³), allergen peak date (days) and Pollen Allergen Potency (ng/pollen). Number of days with allergy risk periods for pollen and allergen considering the thresholds of allergic risk for the pollen (Moderate 50–200 pollen/m³, High >200 pollen/m³; Galán et al., 2007), the allergens (Moderate 0.015–0.041 ng/m³, High >0.042 ng/m³) and both together.